复杂油气藏
複雜油氣藏
복잡유기장
COMPLEX HYDROCARBON RESERVOIRS
2013年
1期
6-11
,共6页
泥盆-二叠系%生物礁(滩)%储集特征%控制因素%大南盘江
泥盆-二疊繫%生物礁(灘)%儲集特徵%控製因素%大南盤江
니분-이첩계%생물초(탄)%저집특정%공제인소%대남반강
Devonian Permian%organic reef shoal%reservoir characteristics%control factors%Nanpanjiang
大南盘江地区泥盆-二叠系生物礁(滩)广泛分布,不同时代、不同相带、不同岩性的礁(滩)储集层,具有不同的储集物性,但储集性能整体较差,表现为低孔低渗的特征。礁(滩)储集空间孔隙类型多样,可分为3大类15小类。研究表明,原生孔隙的发育受控于沉积环境,次生孔隙主要由成岩作用决定,构造和溶蚀作用是形成溶蚀孔、洞、缝的主要因素,对本区礁(滩)储层的储集空间起至关重要的作用。
大南盤江地區泥盆-二疊繫生物礁(灘)廣汎分佈,不同時代、不同相帶、不同巖性的礁(灘)儲集層,具有不同的儲集物性,但儲集性能整體較差,錶現為低孔低滲的特徵。礁(灘)儲集空間孔隙類型多樣,可分為3大類15小類。研究錶明,原生孔隙的髮育受控于沉積環境,次生孔隙主要由成巖作用決定,構造和溶蝕作用是形成溶蝕孔、洞、縫的主要因素,對本區礁(灘)儲層的儲集空間起至關重要的作用。
대남반강지구니분-이첩계생물초(탄)엄범분포,불동시대、불동상대、불동암성적초(탄)저집층,구유불동적저집물성,단저집성능정체교차,표현위저공저삼적특정。초(탄)저집공간공극류형다양,가분위3대류15소류。연구표명,원생공극적발육수공우침적배경,차생공극주요유성암작용결정,구조화용식작용시형성용식공、동、봉적주요인소,대본구초(탄)저층적저집공간기지관중요적작용。
Reefs of Devonian Permian were widely distributed in Nanpanjiang.Various times,facies belts,and litholo-gies of reefs have different reservoir physical properties.But reservoir performance is poor as a whole and manifests as low-porosity and low -permeability.The reservoir of reef shoal has variety of pores including 3 cate gories and 15 subclas-ses.Research results show that development of primary pore is controlled by sedimentary environment.Secondary pore is mainly determined by diagenesis.Tectonism and dissolution are main factors of the formation of dissolved pore,cave and fracture,and play a vital role in the reservoir space of reef shoal in this area.